LTE may not be as common as it once was, thanks to the rise of 4G and 5G, but the standard is still very important for all ...

Depending on your smartphone and carrier, you should have a few connection types to choose from — 2G, 3G, 4G LTE or just LTE, and 5G. Usually, your device will try to connect to the fastest option.

The air interface and packet core enable the LTE mobile user to connect to external data networks such as the Internet. In contrast to 2G and 3G networks, which separates voice and data networks ...

In the subsequent 4G/LTE architecture, voice and data are both ... and the UTRAN (Universal Terrestrial Radio Access Network) is the 3G interface. The air interface comprises the base stations ...

Several people on Reddit noted they had OnePlus devices that support 4G and 5G, but they still received the email about the 3G fee. The crux of the issue seems to be Voice over LTE (VoLTE) support.

Climax Technology HSGW-MAX8-3G/LTE-ZW-F1 433/868 IP-based multi-functional smart home security gateway Climax Technology CTC-763 GSM Voice Dialer, battery-operated Climax Mobile Lite: Advanced ...